Experimental Examination of Sulfur Dioxide Dry Removal from a Mixture of Gases by Calcium Oxide, Calcium Carbonate and Dolomite

Document Type : Research Article

Authors

1 Faculty of Technical Sciences, 6,Trg Dositeja Obradovića, Novi Sad, SERBIA

2 Railways of Republika Srpska, 71, Svetog Save , Doboj, BOSNIA AND HERZEGOVINA

3 Faculty of Transport and Technical Sciences, 52, Vojvode Mišića , Doboj, BOSNIA AND HERZEGOVINA

Abstract

This paper refers to an experiment of SO2 absorption to the three different sorbents: calcium-oxide (CaO), calcium-carbonate (CaCO3) and dolomite (CaMg(CO3)2). In the reactor under the condition of oxidation atmosphere with the mass of sorbent (sample) of 100 g with fractional composition of 500-700µm, the gas temperature varied from 200°C and 400°C. The examinations indicated that the highest degree of sorbent utilization of 14 % was determined for dolomite (CaMg(CO3)2) and the binding degree of SO2  from 65-80% and the lowest for calcium oxide  of 4% and the binding degree of SO2  from 34-60% at the reaction temperature of 200°C. When the reaction temperature is 400°C the degree of sorbent utilization is a bit lower. The achieved results indicate the injection capability of powdered sorbents CaMg(CO3)2, CaCO3 and CaO in the areas of lower temperatures as it is the convective part of the boiler or furnace flue of the thermo power plant.

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References

[1] LIFAC Sorbent Injection Desulfurization Demonstration Project, U.S. Department of Energy, Assistant Secretary for Fossil Energy, Washington , DC 20585, Project Performance Summary Clean Coal Technology Demonstration Program, 6-7, (2004).
[2] Sorbent Injection SOx Control Combustion Optimization Generation Optimization, U.S.- China NOx and SO2 Control Workshops Shenyang, Liaoning Province, P.R. China 3-7  November, (2003).
[3] Klingspor J., Cope D.R., FDG handbook, "Flue Gas Desulphuriastion Systems", IEACoal Research, London, (1987).
[4] Hallaj R., Nikazar M., Dabir B., Thermogravimetric Study and Modeling of Direct Sulfation of  Limestone by Sulfur Dioxide, Chem. Eng., 12, p. 566 (2004).
[5] Nikazar M., Hallaj R., Rahmani M., Dabir B., Hajaligol M.R., Direct Sulfation of Limestone by Sulfur Dioxide, Pakistan J. App. Sci., 2, p. 158 (2002).
[6] Manović V., Anthony J.E., Sequential SO2/CO2 Capture Enhanced Bysteam Reactivation of a CaO - Based Sorbent, Fuel, 87, p.1564 (2008).
[7] Tambe S., Gauri K.L., Li S., Cobourn G., Kinetic Study of SO2 Reaction with Dolomite, Environ. Sci. Technol., 25, p. 2071 (1991).
[8] Mahesh V.I., Himanshu G., Bartev B.S., Liang S.F., Multicyclic Study on the Simultaneous  Carbonation and Sulfation of High-Reactivity CaO, Ind. Eng. Chem., 43, p. 3939 (2004).
[9] Stanmore, B. R., Gilot, P., Review - Calcination and Carbonation of Limestone During Thermal Cycling for CO2 Sequestration, Fuel Processing Technology, 86, p. 1707 (2005).
[10] Sima A., Rouein H., Manouchehr N., Study and Kinetic Modeling of the Direct Sulfation of Iranian Limestones by Sulfur Dioxide at High CO2 Partial Pressures, Iranian Journal of Chemistry and  Chemical Engineering , 27, p. 45 (2008).
[11] Fuertes A.B., Velasco G., Fuente E., Alvarez T., Study of the Direct Sulfation of Limestone Particles at High CO2 Partial Pressures, Fuel Processing Technology, 38, p. 181 (1994).
[12] Bruce K.R., Gullett B.K., Beach L.O., Comparative SO2 Reactivity of CaO Derived From CaCO3 and Ca(OH)2, AIChE J., 35(1), p. 37 (1989).
[13]  Pisani R., Moraes D., Removal SO2 with Particles of Dolomite Limestone Powder in a Binary Fluidized Bed Reactor with Bubbling Fluidization, Braz. J. Chem. Eng. 20(2), (2003).
[14] Yrjas P., Kristiina Iisa K., Hupa M., Comparison of SO2 Capture Capacities of Limestones and Dolomites under Pressure, Fuel, 4(3), p. 395 (1995). 

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